RE: witch is best gearbox for hl tiger 1 ??
As an upgrade I have found that the real steel gears work fine for me, even with the upgraded 400 motors I use. Taigen is marketing a new set of gearboxes with brass gears that are billed as 4:1 ratio also. I have no personal experience with those boxes however. I would also tell you that an upgrade to the electronics is probably a good idea. There are many choices beside HL that will give you more realistic functionality and 2.4 radio operation that is much safer. I guess it all depends on what you want to do and how much you are willing to spend. You might want to check out the Clark boards TK22, DBC3, El-Mod, ETC. before making a decision.
Herman